276 
Card. Bull. Singapore 69(2) 2017 
Chirita barbata auct. non Sprague: Barnett, FI. Siam. 3: 222 (1962). 
Caulescent herb to 50 cm tall, internodes 1.5-9 cm long, sometimes branches arising 
from the petioles. Stem fleshy, green or flushed red-brown, eglandular hairy. Leaves 
opposite, apart from the basal leaf; petioles green or purple-brown, 2-20 mm long; 
blades pale to dull green above, paler beneath, lanceolate, elliptic or ovate, 3.5-36 x 
1.4-20 cm, 1.7-3.9 times as long as wide, base obtuse to subcordate to rarely somewhat 
attenuate, apex acute to acuminate, eglandular hispid above and beneath, margin 
ciliate, margin entire to obscurely toothed, midrib green or red-brown, 5-14 pairs 
of secondary veins, venation more or less sunken above and raised beneath in fresh 
material, flat in dry specimens, tertiary venation lax and inconspicuous. Inflorescences 
cristate, 1-8-flowered; peduncles 2-10 mm long, sometimes fused with each other; 
bracts absent; pedicels green, 0.5-2 cm long, eglandular hairy. All floral axes with 
sparse to dense eglandular hairs. Calyx bilabiate, green, lobes succulent along the 
midrib, lower tube 0.6-0.8 mm, lateral tube 0.1-0.6 mm, upper tube c. 1.2 mm, lobes 
imbricate, lanceolate, 11-17 x 2-3 mm (the dorsal wider than the lateral, which in turn 
are wider than the ventral), apex acute to slightly acuminate, margin entire, eglandular 
hairy outside on margin and midrib, glabrous inside except tip. Corolla 17-25 mm 
long, white outside on tube and lobes, creamy yellow in throat, with a yellow ventral 
stripe and lateral purple-brown stripes or spots, tube narrow, usually curved, becoming 
pouched, with upper and lateral lobes spreading, ventral lobe prominent and forming 
a sinus at the base where it connects with the lateral lobe, tube glabrous at the base, 
outside densely and minutely eglandular and glandular hairy, glabrous inside, with 
sessile or stalked glands all over the throat but especially dense under the upper lobes; 
tube 12-20 mm long dorsally, 16-22 mm ventrally, 15-20 mm between the lips; lobes 
with obtuse apex, upper lobes 2—4.5 x 5-5.5 mm, lateral lobes 4.5-6 x 6.5-10 mm, 
ventral lobe 5.5-7.5 x c. 7 mm. Stamens arising 1.1-1.2 cm above the corolla base, 
filaments bent at base, 4-7 x 0.7-1.2 mm, yellow, glabrous; anthers white with white 
hairs at the top and dorsally, 3-3.3 x 2-2.5 mm, apically joined by a connective, thecae 
divergent, apiculate; staminodes absent or 2,0.3-0.4 mm long, arising 6-7.5 mm above 
the corolla base. Disk annular or more often dorsally cleft, margin slightly lobed, 0.5-1 
mm high. Pistil 13-20 mm long; ovary 0.9-1.2 cm long, c. 1.1 mm diameter, glabrous 
to minutely glandular in the bottom 1/3-1/2, densely eglandular hairy above and with 
some glandular hairs between ovary and style; style 0.2-0.5 mm diameter, eglandular 
hairy except at the very top, 0.8-1.4 cm long; stigma broadly bilobed, lobes 1-1.3 mm, 
hairy. Fruit green, 2.5-4 cm long, 1.7-2.6 mm diameter, sparsely eglandular hairy, 
straight or slightly curved. Seeds dark brown, elliptic, acuminate, c. 0.4 x 0.2 mm. 
Distribution. Widespread in Central, Eastern and Southeastern Thailand. 
Habitat. On limestone in deciduous forest. 
Provisional IUCN conservation assessment. Near Threatened NT. The EOO is > 
45,000 km 2 , well beyond the threshold for a Vulnerable status. The AOO, however, is 
